Rotary pump.



J. R. KINNEY.

ROTARY PUMP.

APPLICATION FILED 0GT.20,1910. RENEWBD APR.16,1913.

1,079,561 Patented NOV. 25, 1913.

2 SHEETS'SHEET l,

J. R. KINNEY.

ROTARY PUMP.

y APPLICATION FILED ocT.2o,1910, RENBWRD APR.16,1913. 1,079,561.

Patented Nov. 25, 1913.

2 SHEETS--SHEET 2.

[Inventor Jhsi'ujilfmey, b3

supported by the vfeet 11, unil JUSTUS R. KNNEY. DF BOSTN. IVIASSACHUSETTS.

1,079,551. Spceieaion ef Letters Patent.

Appliation filed Gctober 2%, 1910, Serial No. 588310. Renewed April 16, w13.

Be it known that I, Jusrus R. KINNRY, u Citizen ei' the United States ef America, :md a resident. et' Boston, county of Suffolk, und State of Massachusetts, hiue iiweuted een tuin new und useful improvements in Re tary Pumps, of which the fellewing u upeeitezitien,

'This invention relate",A to retin-y pumps whiih has for its object the provision nt u pump nlj :i simple eenstruetien having cunipuratiiely feu' upm-ating parts, thereby retlueing itl liability te heernne inoperative.

The imefitisfn insists primarily in plv vifling a pinten mounted upeu a crank niemher-eei' neii'entrie, unil securing merel@ or tunning thereon a prujeetiun provided aite enter end with a. Senii-eylinilrival per-- tien fitting accurately a seinifeyliiulrieal groeve in the piveteil hlule.

The im'enthsn insists in ce1-min nevel 'Feuturee et eenstliwiion ami nrranggiuneiu; et purtu which will he readily unilersliuui hy refeifafuee tu the ileuei'iptien u!" the fh'awings :nul te the elaima hereinafter giron;

(lf the ih'nwiugs: Figure 1 represenis a rei-tieni net-lien of n pump eiuhetlyinp; the features uf the present inxelzliuu, :nul Fig. 2 represents a langitiulinnl i'ei'tival seftinn ef the :ianie7 the cutting pinne heilig en line 2. 2 un Fig. l.

Similar diameters designate like parts:` throughouty the several figures of the fi-aw-v ings.

in the drawings, 10 repreflfeni: a easing having; u effin nrieal pinten chamber 12, und inlet. :nul nu.: let ceinpnrnunts 13 sind lx1 i-nezi'netivelfx. A pusage 15 fnrins a ineanhA 'if eouunubetween the inlet compartment 1&3 unil i piStu-n ehnniber l?. while a Similar pafsufge 1G forum a means of emiununieatinn lu-- tween the piston eliainlier l2 and the 'vuil-'ft compartment li.

lflxtemliuf" through the pieten @hainher 12 is a slm'tt 1s rereluhle in hearings 1S in the end plates 19 secured to this easing 10. This shaft 17 has Secured thereto within the patou ehninher 12 two eeeentries 20, th twe eeientriee being separated by the 4(liviainual wull 21.

The eifentrien 20 :ire keyed te the Shaft 17 and, revolve therewith. Upon each of the eeeeutries "20 is nmuuted an annular pistnn member 22, which is adapted to always contaet,I at one point in its periphery with the Pali exited 'Sm'. 25,

Sern No. 76.1.,566.

eylindrieui wall of said pieten chamber uurm ing the rotation ei the Shaft 17. Obvieufily. where two pinten members are used, they are eppunitely disposal so that the een-- meting pnints on ther peripheries are Liiainetiirally epnf tite enen other. Each pisten inei'nlier 2z ie provided with a tl0vetailed groove Q3, in which is inseried the pri'ijeeting member 21, provided en its outer enti with Semi-eyliinlrienl pertien am curutely tilting :i transverse semi-eyiindri` cal grom'e i i the hlaljle piveted at te the .cursing Central Suppe;` 29, The pivotal portinn 28 u the hlnfle mounted in :i 5eini-eylindrieql husliing 31) which is matie nunievuluhle by the 3 inserted partially in the groove in Said huele ing' and partially in the ventral suppert 29. The unter Curve-:l iuee ef the pii'etenl hiaele 2.7 is pui-vided with the usual packing' inenr here 232 in prevent any leakage between outer fave mul the farting i'aee et the umn" lf?. 5":nh piwte'n iueuiher :Eil extends liini the eui pluies 19 lo the lliviwienul n li ifi, anrl these piuen members are previ-defi at ezu'h end lhereuf with parking members lil hearing against, #aid euri pl les 19 anti livisienal wail l, thus preventing any leukhy the vuil uf the piston members hiring llieirrutntiun.

)le the Shaft 1T rotating the eccentric 2() will refute, therewith within the aunulur pistun members whieh annular piston members will have a Slightoseillntien un wiifl cranks 2f) during' sueh rotation. Dun ini" lhi: xsfillatiun She scniieylinilrifal enti hau a Slight nseillalery nmveuient. within the seinieyliinliieal reeees 21S, und the pivzum! iueinher r2.7 is uuwed about the pivot 2S i tu aeeunnneulale itself tu (he Yarieus posini the pieten ineinher during the ilien of the shaft 1T und in; eeeentric Q0. ily this emistruetion lhe use of pivoted sluwe hearing upon the pieten nieuiher 22 unil carried hy the pivpted hlzule 2T if; wholly ehviatefl. Heretofure, in devices of this el ns1., where these shoes nre used, the continuous Contact with the periphery of the r0- tiiting piston causes them to become quickly worn and as a consequence leakages are liable te occur between the piston' and said she@ while oftentimes the edges of the shoes engage with the periphery of the piston and injure it. These objections are wholly oven come' by means of the prejei-iinn 24 Secured permanently to the annular piston member and pivotally connected to the pivoted blade 27. It is obvious that by this construction, wherein a permanent pivotal connection is made between the annular piston member and the pivoted blade, the rocker or other members heretofore necessary to force the pivoted blades into contact with the periphery of the rotating pistons, are wholly dispensed with, thereby reducing 'the parts of the pump to a minimum, and as a conseqience materially reducing the liability of t e pump to become inoperative.

In order to provide suitable lubrication between the annular member 22 and the eccentric 20, the annular member 22 'is provided with a passage 34 on the discharge side vof the projection 24, said passage extending from the periphery of said annular member to a groove 35 cut into the 'inner wall of said annular member. The water or other liquid being pumped will be discharged through the passage 16 under pressure, and a portion of this water or other liquid under pressure will pass through the openin 34 into the groove 35, and the pressure o this liquid lnterposed between the periphery of the eccentric 20 and the inner wall of the member 22 will tend to force said member outwardl in every direction,l thus obtaining a very ree movement of the eccentric within said annular member. The water or other liquid in the groove 35 will be forced outwardly in eitherl direction between the eccentric and annular member and ultimately pass beyond tbe ends of said annular member and effect a suitable seal between the ends thereof and the end plates 19. Any water or liquid passing by the packings 33 will return into the piston chamber 12. This forms a very effectual means 0f lubricating the eccentric 20, whereby it is permitted to move freely within the surrounding annular member 22.

It is believed that the operation and many advantages of the invention will be thoroughly understood without any further drescription.

Having thus described my invention, I claim:

l1. In a device of the class described, the combination of a casing provided with a piston chamber and inlet and outlet passages communicating therewith; a revoluble piston therein; an annular member surrounding said piston and adapted to bear at one point in its periphery upon the wall of said piston chamber, said member having anannular groove in its inner cylindrical Wall; means for admitting liquid under pressure to said groove; and a projection from said annular member interposed between said inlet and outlet passages and adapted to prevent the direct passage of liquid from on'e passage to the other.

2. In a device of the class described, the combination of a casing provided with a piston chamber and inlet and outlet passages communicating therewith; av revoluble piston therein; an annular member surrounding saidpiston and adapted to bear at one point in its periphery upon the wall of said piston chamber, said member having an annular groove in its inner cylindrical wall; a passage through said annular member communicatingwith the outlet passage adapted to admit liquid under pressure to said groove; and a projection from said annular member interposed between said inlet and outlet passages and adapted to prevent the direct passage of liquid from one passage to the other.

3. In a device of the class described, the combination of a casing provided with a piston chamber and inlet and outlet passages communicating therewith; a revoluble piston therein; and an annular member surrounding said piston and adapted to bear at one point in its periphery upon the 'wall of said piston chamber, said member being provided with means projecting therefrom to prevent the direct iassage of liquid from one passage to the ot er and having an an nular groove in its inner cylindrical Wall communicating with said outlet passage by a single' passage adjacent said projecting means. i

Signed by me at Bosto-n, Mass., this 17th day of October, 1910.

J US'IUS R. KINNEY.

Witnesses:

WALTER E. LOMBARD, NATHAN C. LOMBARD. 

